In other words, the size of a Bathtub is 530 times 304 cubic centimeters.

(a.k.a. bath, a.k.a. tub) (for Bootz Industries Aloha 5 ft. Left Hand Drain Soaking Tub)The capacity of a typical bathtub is 160,000 cubic centimeters. Historically, bathtubs have been made of various materials including marble, terracotta, silver, gold, and iron but the size and shape of the tubs has changed little in their 7,000 year history.

It's about one-thirty-five-thousandth as big as a Concrete Mixer Truck.

In other words, the size of a Concrete Mixer Truck is 36,000 times 304 cubic centimeters.

(a.k.a. cement mixer, a.k.a. cement mixer truck, a.k.a. cement transport truck, a.k.a. concrete mixer, a.k.a. concrete transport truck, a.k.a. in-transit mixer)(standard size; drum capacity)A concrete mixer truck has a drum volume of up to 11,000,000 cubic centimeters. Concrete mixer trucks can be in transit for about 90 minutes before the concrete dries — if the concrete dries while in the drum, jackhammers or even dynamite must be used to remove it.

In other words, 304 cubic centimeters is 0.00000014 times the size of a Hot Air Balloon, and the size of a Hot Air Balloon is 7,100,000 times that amount.

(four-person capacity; envelope volume; average)The average volume of a hot air balloon sufficient to lift four adults is 2,200,000,000 cubic centimeters. Typically made of nylon or dacron, a balloon envelope of this size typically weighs just 88 kg (190 lbs).

In other words, 304 cubic centimeters is 0.00000012 times the size of an Olympic Swimming Pool, and the size of an Olympic Swimming Pool is 8,300,000 times that amount.

(FINA regulation; (minimum capacity)According to the Fédération Internationale de Natation (FINA), a swimming pool for Olympic and world championship events must measure 50 m by 25 m with a depth of at least 2 m for a total volume of 2,500,000,000 cubic centimeters. A pool of this size was to be used in Olympic time trials in New Jersey in early 2008, but its component pieces were stolen from a warehouse, likely to be sold for scrap metal.

In other words, 304 cubic centimeters is 0.000000053 times the size of The Goodyear Blimp, and the size of The Goodyear Blimp is 18,900,000 times that amount.

(for GZ-20A) The Goodyear GZ-20 model Blimp measures 5,740,000,000 cubic centimeters in total volume. A December, 1929 college football game between the University of Florida Gators and the University of Oregon Webfoots (later the University of Oregon Ducks) began with the blimp dropping a parachute-equipped ball from a height of 61 m (200 ft) to the field below.